Push button window lock



*sept'i, 1931.

L. c. HINDERER ET AL I PUSH BUTTON vmwow LOCK Filed Sept. 10-, 1930 2Sheets-Sheet 1 A llomey S p 1, 19351 L.. c. HINDERER ETAYL 1 rusa BUTTONwmno'w LOCK 7 Filed Sept. 10, 1930 I 2 Sheets-Sheet '2.

In venior Wife? ffi'z'iadel'er By @Mmih v A iiorney 1 in lockingposition.

3 2o meat-in opposecv Patented Sept. 1, I931 r LOUIS o. remnants ANDPoser Barron Application filed September This invcntionrelates generallyto window locks for maintaining the window sashes FFICE exam-Essa, orKANKAKEE, ILLINOIS wrnnow LGCK locked in ventilating relation to thewindow 1 frame, and particularly to a lock of this type I: awhich isoperated intolocking' andreleased from lookingposition by pushing thesame 930. Serial No, 489,998.

said mechanism being of new and improved arrangement and design,producing a superior operation especially adapted for a device of thischaracter. V

It is also an objectofthis invention to'provide a suitablemounting andcasing associinwardly into the's'ash frameof one-of the sashes in themanner of a push button, and turning the same to securely detain thelock It is an object of this invention to provide a device of thecharacter described "wh ch comprises new and novel features ofconstrucatce with said mounting, forsuitably mounts mg the device 1noperating position in association'witha window structure, or uponanother structure embodying two relatively sliding members, which arerequired to beadustably locked against relative'movement' with: respectto each other.

tion and arrangement, comprising a pair of 21: mechanically cooperatinghorizontally slidable ro'ds which are mounted in oneside or upon eitherside of the vertical portion ofthe window sash or sashes, so as to, inreleased position, lock thesashes against movedirections, by projectingone of said rods to contact r'eleasably the upper portion of one of thewindow sashes. V

t is another important object of this invention to provide mean 'n alockof this 25 type for detaining the locking; means inlockiug' positionwhereby the locking meansmay not be displaced from locking position bymerely pressing or pushing the said means, said means comprising; astructure associated with said locking means which is operated byturning; the locking meansto releasably engage a detent, and todisengage therefrom upon reversing the said turning.

it is also an object of thisinvention to pro- 9: vide a deviceof thecharacter described which maybe employed for preventing opposedmo- 'tionor movement of twobodies'in superimposed orside by side slidingrelation, which may be operated easily and quickly, and does 40 not inany manner interfere with the said relative sition.

It is also an object of this invention to provide a device of thecharacter described,

movement when out of locking powhich is op rable in the same manner as apush button, either of saidpair of rods being projeetable into or out oflocking position .by pressing inwardly upon either of them, and which isprovided. with mechanism for autoit'is also an object of this inventionto provide a device of the character described which is especiallyadapted to releasably retain the window sashes in a window frame inpredetermined ventilating relation with the Windew frame, providingventilating openings either at the topor at the bottom or at both thetop and bottom of the window frame, and, to lock the sashes in saidposition, to prevent movement of the window sashes by a person on theoutside of the window, and prevent such relative movement of the windowsashes as would permit the sashes to be raised or lowered so as to admitan intruder. 1

c It is'also an obiect of this invention to provide a device of thecharacter described which is simple and'easy to operate, highlysatisinns, in which 0 maticallly ejecting one or other of said rods,

Figure 1 is an elevational view of a window frame showing the mountingof my improved push button look upon the sashes thereof. 4 t

Figure 2 is a side or edge view in fragment illustrating in detail thearrangement of the lock when in abutting position upon the upper end ofalower window sash.

-' to limit the a )nlication of this invention to the particularmodificaion set forth herein to illustrate the principle thereof, andany change or changes may be made in material and structure consistentwith the spirit and scope of the invention.

Referring in detail to the drawings the numeral 5 designates generally awindow frame having slidable therein the upper window sash 6, and thelower window sash 7.

Positioned upon-and mounted in one of the side members of the upper sash6 and generally designated by the numeral 9 is illustrated our improvedpush button window lock, and referring to Figure 2 it will be seen thatone of the rods of the lock is extended from the said sash 6 to abut theupper portion 8 of the sash 7 where an abutment plate 10 is provided forimmediately contacting said rod. It thought to be obvious that it willbe understood that with the rod or bolt projected to abut the upper sideof the abutment plate 10 fastened on the upper end of the lower windowsash 7 that relative motion in the direction of the arrows in Figure 2will be prevented. Obviously, the ventilation spaces 11 and 12 cannotunder this arrangement be enlarged by a person attempting to shift thesashes from the outside of the window, or by a person unfamiliar withthe operation of the look from the inside. This arrangement, however,does not prevent the complete closing of the window whenever desired,either from the inside or from the outside of the window.

Referring to Figure 4 which is an illustration of a preferred embodimentof the principleof our invention, the numeral 13 desi nates the front orattaching plate of the ock structure, and as shown in Figure 3 it may beof any desired formation, prefen ably oval or rectangular, and providedwith upper. and lower extensions accommodating holes 14 which are formedto receive screws or other attaching means for securing the plate inposition on its support. A pair of apertures 15 are formed in thecentral portion of the plate one over the other, to reoeive the forwardend of ashoulder 16., 011 the forward ends of a pair of cylindricalcasings 17 and 1.8. It is understood, of course, that the casings 17 and18 might be of any de sired transverse section such as square,hexagonal, or any other desired shape. As indicated at 15 the forwardends of the apertures designated by the same number are slightly flared,to permit swedging the ends of the shoulder 16, for maintaining thecasings 17 and 18 firmly united with the plate 13.

Referring to Figure 6, the oblong plate 19 which covers the rear end ifthe casings 17 and 18 is illustrated in detail. The plate 19 is securedagainst the rear end of the tubes 17 and 18 by prongs 20 which engage innotches 21 in the plate 19 against which they are then bent and pressed,to firmly unite the said plate against the rear ends of the easings 17and 18. A pair of bosses 22 are provided on the inner side of the plate19., projecting from a position on the said plate which may be set to beconcentric with the inner walls of the casings 17 and 18. The bosses 22have a purpose to be described hereinafter.

Snugly slidable in the upper casing 17 is the bolt or rod 23, which isadapted to have its outer end 24 flush with the plate 13 when pushedentirely into the casing 17. An in termediate portion of the peripheryof the bolt 23 is provided with a groove 25, from the rear edge of whichthe bolt tapers gradually at 26 to a point near the rear end of the boltwhere is formed a flange 27 of the same diameter as the main portion ofthe bolt. A coil spring 28 is positioned at one end about the boss 22and extends longitudinally into a cavity 29 formed in the rear end ofthe bolt 23, said spring adapted to normally urge said bolt into aposition projecting from the easing 17. A pin 50 fixed in anintermediate position of the bolt 23 behind the groove slides on thestop 40. When the pin reaches the forward end of the stop the bolt isturned to place the pin in the offset slot 1O for securely locking thebolt against inward move ment.

Slidably and snugly fitted in the lower casing 18 is a plunger 30 whoseforward part is similarly formed and positioned in retracted position tothe bolt 23, and a spring 31 of the coiled variety is positioned uponthe boss 22 within the casing 18, the forward end of the spring-31 beingreceived in a recess 32 formed in the rear end of the plunger 30, whichincidentally is somewhat shorter than the bolt 23. The cavity 29 isconsiderably longer than the recess 32. Provided in the lower walls ofthe casing 17 and the upper Wall of the casing 18 so that they register,are a pair of elongated openings 33 which permit a pin 34 to beprojected from the casing 18 into the casing 17 and to achieve registrywith the groove 25 or the tapered portion 26 of the bolt 23. The pin 34has an enlarged end portion 35 which is slidably mounted in a verticallydisposed well 36 having the retaining shoulders 37, to limit thecomplete projection of the pin 34. The pin 34 is normally projectedthrough the Opening 33 by a coiled spring 38 which exerts its forceagainst the lower side of the casing 18 and the bottom surface of theenlarged portion 35 of the said pin.

The illustration in Figure 4 shows the mechanism in whatis hereafter tobe called the neutral position, such position being maintained by theprojection of the pin 34 into the groove 25. Movement from this positionis achieved by inward pressure upon the plunger 30 which results indisengagement of the pin 34 from the groove 25 permitting the spring 28to project the bolt 23 into extended position. It is obvious thatpressure upon the outer end 24 of the bolt 23 may result in once againregistering the groove 25 upon the pin 34 and releasably locking thesaid bolt in neutral or retracted position.

A pin 50 is secured on the upper side of the bolt 23 and projectsthrough the elongated slot 40 which terminates at its forward end in aright angular effect 40, so that as the bolt is ejected to lockingposition, a quarter turn will bring the pin into the offset position ofthe slot and prevent opening the lock by using a stick or other pressuremeans from the outside of the window as might be attempted by anintruder.

A modification of the structure illustrated in Figure 4 and justdescribed, is set out in Figure 7. In this modification in Figure 7 thegeneral structure ofthe plate 13, the back plate 19 and the casings 17and 18 and the bolt 23 and the plunger 30 are substantially identi al ingeneral formation, slight specific changes being made to accommodate thedifferent moving parts of this modification. In this modification thebolt 23 is provided on its upper side with a projecting pin 39 near itsrearward end and the pin 39 slides in an elongated slot 40, the pin 39and the slot 40 pro- 1 viding for limitin the outward projection of thebolt 23. r The pin 39 also functions like the pin 50 in the firstdescribed modification and locks the bolt by entering the offset 40' inthe forward part of the slot 40. The bolt 23 is provided with the cavity29 carrying the spring 28 positioned by a boss 22. A deep 2 well 41 isprovided leading from the lower side of the bolt 23 to a point almost tothe opposite side, and within the well 41 is a coiled spring 42downwardly urging a ball 43 which is adapted to be registered in anorifice 44 formed in the bottom side of the casing 17 in register withthe open end of the well 41. This last named structure provides areleasable detent for maintaining the bolt 23 in neutral position. T hepush plunger 30 in this second modification, is of approximately thesame relative length as the same element in the first describedmodification, but the bolt in the first modification is considerablywith the rear face of the plunger 30, so that said slot 46 cooperatingto limit the outward y movement ofthe plunger 30 and to limit themovement inwardly when the same is pressed. Me'ansto release the bolt 23by pressure upon the plunger 30 is constructed as follows: 1

Apairof lateral projections indicated in dotted lines in Figure 7 at 4?,are formed on the inner face of the plate 19 and they are transverselyplaced" in the same plane and provide for supporting the ends of a shaft48 ed upon said shaft 48 is a trigger'49 adapted to'have one arm engagedwith the rear face of the bolt 23, and have its other arm engaged uponpressure being applied on the front end of the plunger-30, the trigger49 will transmit thesaidpressureto the bolt 23 and causethe unseatingofthe ball 43 to permit vjournaled across thespa'ce between and in eachof S&1lPI'O]8CtlOnS, and centrally mountthe outward projection of thebolt 23 bythe u spring 28 to the limit of the slot 40 and retained bythe pin 39. The operation and employment of our improved push buttonwindow lockis thought to be clear from the eX- planation and descriptionalready givelr above'from which it will be evident that we have provideda device of thecharacter described, which is mechanically efficient,which is easily and quickly and cheaply-installed, and is otherwiseadmirably suited for the purposefor which it was designed.

What isclaimed is 1 A window lock of the type described comprising aplate for mounting on a window structure, a pair of tubular casings se lcured at their front ends in apertures in said plate, and rearwardlplateclosing therearward ends of said casings and support ing them inrelation to each other; and a bolt closely slidable in one of saidcasings and adapted to position its forward end flush with the'plate,said bolt being formed centrally with a peripheral groove from whichextends rearwardly a tapered portion, and a flange on the rearward endof the bolt; and a plunger sloselv slidable on the other of said tubularcasings having a central vertical well, a pin and a spring forprojectingthe pin from said well, said pin adapted to be projected throughregistering apertures in said casings to seat frictionally I in the saidgroove in said bolt; and a pair of bosses formed on the inner facing ofsaid rearward plate, a coiled spring on each of said bosses and extendedforwardly into recesses in the rearward ends of said bolt and saidplunger for maintaining them in operative position in the casings andprojecting the said bolt to a position in extension from the said onecasing, and means to lock the bolt against unauthorized inwardinovement.

2. A window lock ofthe type described comprising in combination, aWindow frame, window sashes slidable in the frame, a means for limitingthe relative movement of said sashes in said frame, comprising a platefor V mounting on a window structure, a pair of tubular casings securedat their front ends in apertures in said plate, and a rearward plateclosing the rearward ends of said casings and supporting them inrelation to each other; and a bolt closely slidable in one of saidcasings and adapted to position its forward end flush with the plate,said bolt being formed centrally with a peripheral groove from whichextends rearwardly a tapered portion, and a flange on the rearward endof the bolt; and a plunger closely slidable' in the other of saidtubular casings having a central Vertical well, a pin and a spring forprojecting the pin from said well, said pin adapted to be projectedthrough registering apertures in said casings to seat frictionally inthe said groove in said bolt; and a pair of bosses formed on the innerfacing of said rearward plate, a coiled spring on each of said bossesand extended forwardly into recesses on the rearward ends of said boltand said plunger for maintaining, them in operative position in thecasings and projecting the said bolt to a position in extension from thesaid one caslng.

In testimony whereof we affix our signatures.

LOUIS C. HINDERER. WVALTER F. HINDERER.

